AVE6328014: America, c.1990s: Mission control director for space shuttle Endeavour sits at desk in mission control center / Bridgeman Images

AVE6328020: America, c.1990s: Two astronauts on exterior of space shuttle Endeavour while in orbit / Bridgeman Images

AVE6328026: United States, 1950s: Weapons produced in Germany are places in a train and loaded into cargo boxes / Bridgeman Images

AVE6328056: United States, 1940s: Teacher giving speech on stage / Bridgeman Images

AVE6328086: United States, 1960s: two men look at model of solar system / Bridgeman Images

AVE6328092: United States, 1960s: Close up of man's face / Bridgeman Images

AVE6328107: United States, 1960s: Rotating Earth in sky / Bridgeman Images

AVE6328110: United States, 1960s: Animation of surface of sun / Bridgeman Images

AVE6328122: Europe, 1940s: boy stands by wall / Bridgeman Images

AVE6328134: United States, 1960s: Microscopic image of slide / Bridgeman Images

AVE6328149: Europe, 1940s: hunger title / Bridgeman Images

AVE6328155: Europe, 1940s: man on roof / Bridgeman Images

AVE6328173: Europe, 1940s: man in street walks along road / Bridgeman Images

AVE6328194: UNITED STATES: 1981: Space shuttle detaches from scaffolding as it launches. / Bridgeman Images

AVE6328197: UNITED STATES: 1981: People jumping and waving arms as space shuttle takes off. / Bridgeman Images

AVE6328200: Europe, 1940s: close up of man's face / Bridgeman Images

AVE6328209: Europe, 1940s: repaired roof on building / Bridgeman Images

AVE6328230: UNITED STATES: 1981: Two astronauts move items around cabin and talk with ground control. / Bridgeman Images

AVE6328245: Europe, 1940s: malnourished baby cries in crib / Bridgeman Images

AVE6328251: Man Switches on Radio and Slides Down Steps / Bridgeman Images

AVE6328266: UNITED STATES: 1981: View of Earth and clouds as space shuttle enters Earth's atmosphere / Bridgeman Images

AVE6328771: 1920s: Women riding on swing ride / Bridgeman Images

AVE6328777: United States, 1960s: men work with models of city / Bridgeman Images

AVE6328786: 1920s: Barrels roll down factory line / Bridgeman Images

AVE6328789: United States, 1960s: men play baseball in match / Bridgeman Images

AVE6328798: 1920s: People ride on swing ride / Bridgeman Images

AVE6328816: United States, 1940s: Scientists works in lab / Bridgeman Images

AVE6328954: United States, 1970s: cars on road at night / Bridgeman Images

AVE6328960: United States, 1970s: storm clouds form in sky / Bridgeman Images

AVE6328984: United States, 1970s: radio on table / Bridgeman Images

AVE6328987: United States, 1970s: people hide behind wall as tornado touches ground / Bridgeman Images

AVE6328999: United States, 1930s-1940s: A line of engine blocks exit a drilling machine / Bridgeman Images

AVE6329006: United States, 1930s-1940s: Electric camshaft tester tests camshafts by gaging the surfaces of each one for accuracy and quality / Bridgeman Images

AVE6329021: United States, 1960s: Man cuts board with electric saw / Bridgeman Images

AVE6329024: United States, 1960s: View of circular saw / Bridgeman Images

AVE6328926: United States, 1970s: view of beam and road through windscreen at night / Bridgeman Images